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Finding the Fourth Proportional to 272,348.63, 408,522.98 and 72,669.76

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Solution

The fourth proportional to 272,348.63, 408,522.98 and 72,669.76 is: 109,004.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,348.63 : 408,522.98 = 72,669.76 : x
  2. Step 2: Convert to fraction form
    272,348.63/408,522.98 = 72,669.76/x
  3. Step 3: Cross multiply
    272,348.63x = 408,522.98 × 72,669.76
  4. Step 4: Simplify right side
    272,348.63x = 29,687,266,071.45
  5. Step 5: Solve for x
    x = 29,687,266,071.45/272,348.63
  6. Step 6: Final answer
    x = 109,004.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.